Compound table for drill-presses.



L. H. COLBURN.

GDMPOUND TABLE FOR DRILL PRESSES.

APPLIOATION FILED JAN. 29, 1912 Patented July 22, 1913.

imme/whom LESLIE H. COL. BURN L. H. COLBURN.

COMPOUND TABLE FOR DRILL PRESSES.

APPLICATION FILED JAN. 29, 1912.

1,068,32. Patented July 22, 1913.

3 SHEETS-SHBET 2.

COLUMBIA PLANOCHMPH 00.. WASHINGTON. n. c.

L. H. GOLBURN.

COMPOUND TABLE FOR DRILL PEESSES.

APPLICATION FILED 111]].29, 1912.

3 BHEETB-SHEET 3.

Patented July 22, 1913.

INVENTOR LESLIE H. COLBURN STATES PATEN 1 nines.

l'JESLIE I-l'. COLEURN, OF FRANKLIN, PENNSYLVANIA, ASSIG-NOR TO COLBURNMACHINE TOOL COMPANY, OF FRANKLIN, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

COMPOUND TABLE FOR DRILL-PRESSES.

llllllt lfiitda Specification of Letters Patent.

Patented July 22, 1913.

To all whom it may concern:

Be it known that l, LESLIE l-l. CoLnUnN, citizen of the United States,residing at Franklin, in the county of Venango and State ofPeiinsylvania, have invented certain new and useful Improvements inCompound Tables for Drill-Presses, of which the following is aspecification.

The object, construction, operation and advantages of my invention areherein set forth. with sut'ficient clearness to enable those skilled inthe art to which it ap 'iertains, to make and use the same.

The object of my invention is to provide a compound table for drillpresses, and more especially an adjusting means for same, whereby thetwo movements of the tablewhich are relatively transverse to each other,-may be independently but simultaneously accomplished by the operatorfrom one position at the front of the table.

A compound table for a drill-press is not novel, neither is the matterof the adjustability of such table in two directions, but so far as I amaware, no adjusting means has been provided whereby the operator may,from one position, and simultaneously but independently, adjust suchtable in the two directions,that is laterally, also forward or backward,and it is such a construction that l have invented and seek to secure byLetters Patent. 1 am aware however, that in certain types of machinetools employing compound tables, the adjusting mechanisms for thevarious movements of the table have been connected by gearing, so thatthe actuation of said adjusting mechanisms simultaneously accomplishedby means of one crank or hand wheel, but such tuljustment lacks theindependent feature which characterizes my construction.

The construction whereby l attain said,

object is clearly set forth in the drawings, the various figures ofwhich are as follows Figure 1 is a plan view 01' a compound tableembodying my invention; Fig. 2 is a front elevation of same; Fig. 3 is aside elevation thereof; Fig. 4iis a plan view of the saddle; Fig. is afront view of the saddle; Fig. (3 is one of the pinions used foradjusting the saddle and table. Fig. 7 is a side elevation of adrill-press equipped with my improved compound table.

The construction here shown is substan tially as follows:-Upon anysuitable sup port, as l, which is located beneath the spindle of thedrill-press, is mounted a sad dle 2 arranged in any suitable way, tohave a forward and backward movement or ad justment upon said support1.. Upon said saddle is mounted a table 3, arranged in any suitable way,to have a lateral movement or adjustment, which movement is in a fixedline transverse to the movement of saddle 2. In proximity to each outercorner of said saddle, is formed apocket l, 5, for the reception of aspiral pinion G, 7,---see Fig. 6. Upon the upper face of support 1, andpositioned beneath pinion G, is rigidly attached a rack 8, with whichpinion (S meshes. Upon the lower face of table 3, and positioned abovepinion 7, is rigidly secured a rack 9, with which pinion 7 meshes. Thelongitudinal dimensions of said racks extend in, a fixed line at a rightangle to each other. Pinions 6 and 7 are each rigidly attached to ashaft 10, for the reception of which, suitable bearings 11 and 12 areformed integrally with the saddle 2. Said bearings 11 and 19 extendobliquely outward from the outer corners 01' said saddle, and the outerend of each shaft 10 suitably formed for the reception of a manipulatingmeans, such as capstan wheels 13 and 14:. From an inspection of Figs. 1and 2, it will be noted that said wheels 18 and 1st are positioned inclose proximity to each other and. are with in easy reach of theoperator, so that one wheel may be operated with one hand, and the otherwheel with the other hand, simultaneously but independently. It willalso be further noted especially by an additional inspection of Figs. atand 5, that said adjusting wheels 13 and 1d always maintain theirrelative position, regardless oi the adjustments made: whereas, with allother (leviccs of this class the adjusting devices more with theirrespective elements, and. their relative position changes accm'diugly.

When it is desired to adjust the saddle 2, wheel 13 turned, which,causes pinion (5 to revolve and to travel upon rack 8, either outwardlyor inwardly, as desired, and this causes a corresponding movement ofsaid saddle and the superimposed table 2-3. When it is desired to adjustthe table 3 laterally, wheel Ll is turned, which causes pinion '7 torevolve and to move rack 9 and table 3, either to the right or left, asdesired, and as above stated, wheels 13 and let may be simultaneouslyturned and both adjustments, as above set forth, be simultaneouslyaccomplished: on the other hand, with all other forms of adjustingdevices, except as above stated while it is possible at some positionsof the adjusted elements, to reach both of the adjusting devices andadjust their respective members or elements simultaneously, at otherpositions thereof, it is not possible to do this, owing to the fact thatsaid devices move with their said respective elements, and are so farapart that they can not both be reached at the same time forsimultaneous manipulation. It will thus be readily understood that, bythe use of my improved adjusting device, much economy of time and labormay be secured.

The pinion 6, which moves the saddle, is a left-hand spiral, and pinion7, which moves table 3, is a right-hand spiral.

A shield 15 for the rack S is'formed upon the apron 2, to protect saidrack from the chips and borings from the drill.

As a usual thing, the knee or bracket 1 of a drill-press is verticallymovable, so that work of varying thicknesses may pass beneath the drillor other tool that issecured in the lower end of the spindle 16, but sofar as the application of my invention is concerned, this may or may notbe the case.

I claim 1. In a compound table for drill presses the combination of asuitable base adapted to be positioned beneath the spindle of suchpress, an element consisting of a saddle adjustably mounted upon saidbase, a second element consisting of a table adjustably mounted uponsaid saddle, an intermeshing pinion and rack arranged for adjusting saidsaddle, an additional intermeshing pinion and rack arranged foradjusting said table,

both of said pinions being carried by one of said elements, wherebytheir relative positions remain unchanged when adjustments are made, andmeans for revolving said pmions.

2. In a compound table for drill-presses, the combination with a bracketattached to and vertically adjustable upon the column of a drill-press,of a horizontally-adjustable saddle mounted upon said bracket, a tablemounted upon said saddle and adjustable thereon, in a line transverse tothe line of adjustability of said saddle, a rack attached to the upperface of said support extending parallel to the line of adjustability ofsaid saddle, a shaft revolubly mounted in said saddle, with its axispositioned obliquely to the line of adjustability of said saddle and itsouter end extending frontwardly, a pinion keyed to the inner end of saidshaft, meshing with said rack for the purpose set forth, a rack attachedto the lower face of said table and extending parallel to the line ofadjustability thereof, a second shaft revolubly mounted in said saddle,with its axis positioned at substantially a right angle to saidfirst-mentioned shaft and its outer end also extending frontwardly, apinion keyed to said last-mentioned shaft, meshing with said table-rackfor the purpose set forth, and means arranged so to be accessible to theoperator from one position for revolving said shafts simultaneously orindependently.

3. In a compound table for drill presses the combination of a suitablebase adapted to be positioned beneath the spindle of such press, anelement consisting of a horizontally-adjustable saddle mounted upon saidbase, a second element consisting of a horizontally-adjustable tablemounted upon said saddle, an intermeshing pinion and rack arranged foradjusting said saddle, an additional intermeshing pinion and rackarranged for adjusting said table, both of said pinions being carried byone of said elements, a shaft, upon which each of said pinions ismounted for the purpose of revolving same, said shafts being providedwith bearings in said pinioncarrying element, and means for revolvingsaid shafts.

4. In a compound table for drill-presses, the combination with abracket. attached to and vertically adjustable upon the column of suchpress, of a horizontally-adjustable saddle mounted upon said bracket, atable mounted upon said saddle and horizontally adjustable thereon in afixed line transverse to the line of adjustability of said saddle, arack attached to the upper face of said support extending parallel tothe line of adjustability of said saddle, a shaft revolubly mounted insaid saddle with its axis positioned obliquely to the line ofadjustability and its outer end extending frontwardly, a pinion rigidlyaffixed to the inner end of said shaft arranged to mesh with said rackfor the purpose set forth, a rack attached to the lower face of saidtable and extend ing in a line parallel to the line of adjustabilitythereof and at a right angle to said first-mentioned rack, a secondshaft revolubly mounted in said saddle and extending diagonallyoutwardly with its axis posi tioned at substantially a right angle tosaid first mentioned shaft, a pinion keyed to the inner end of saidlast-mentioned shaft arranged to mesh with said table-rack for thepurpose set forth, and means arranged torevolve said shaftssimultaneously and independently.

5. In a compound table for drill presses, the combination of a suitablebase positioned beneath the spindle of such press, a saddle mounted uponsaid base and horizontally adjustable thereon, a table mounted upon saidsaddle and horizontally adjustable thereon, an interlneshing pinion andrack arranged to adjust said saddle, an internieshing pinion and rackarranged to adjust said table, both of said pinions being mounted Withinsaid saddle, and movable therewith in a fixed relative position, a shaftaflixed to each of said pinions for the purpose of revolving same, andprovided with 10 hearings in said saddle, each of said shafts extendingdiagonally outward from said saddle, and means tor revolving saldshal'ts, lor the purpose speelfied.

In testimony whereof I a'l'hx my signature in presence of two wltnesses.

LESLIE H. COLBURN.

it-messes WM. 13. GRIFFEN, W. E. Bannow.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latentsi Washington, I). U.

